Context menu and button padding issues in Eclipse

[ghost]

Hello. With latest version, eclipse has switched to GTK3 by default. However, when using Paper theme, it looks quite ugly:

• Paddings for buttons are too big, so when many buttons are stacked - it wastes a lot of screen space
• The bottom of any context menu has this ugly line with some pixels of empty space underneath

As you can see in screenshot, neither GTK2 version, nor GTK3 version using Adwaita theme do not have these bugs. The same applies to some other GTK3 apps, i.e. Shotwell and Vinagre

[ghost]

Same problem with newly released Geany 1.25 with gtk3 interface